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VVVVVV/desktop_version/src/Ent.cpp

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2020-01-01 21:29:24 +01:00
#include "Ent.h"
#include "Game.h"
#include "Graphics.h"
entclass::entclass(void)
Fix entity and block indices after destroying them This patch restores some 2.2 behavior, fixing a regression caused by the refactor of properly using std::vectors. In 2.2, the game allocated 200 items in obj.entities, but used a system where each entity had an `active` attribute to signify if the entity actually existed or not. When dealing with entities, you would have to check this `active` flag, or else you'd be dealing with an entity that didn't actually exist. (By the way, what I'm saying applies to blocks and obj.blocks as well, except for some small differing details like the game allocating 500 block slots versus obj.entities's 200.) As a consequence, the game had to use a separate tracking variable, obj.nentity, because obj.entities.size() would just report 200, instead of the actual amount of entities. Needless to say, having to check for `active` and use `obj.nentity` is a bit error-prone, and it's messier than simply using the std::vector the way it was intended. Also, this resulted in a hard limit of 200 entities, which custom level makers ran into surprisingly quite often. 2.3 comes along, and removes the whole system. Now, std::vectors are properly being used, and obj.entities.size() reports the actual number of entities in the vector; you no longer have to check for `active` when dealing with entities of any sort. But there was one previous behavior of 2.2 that this system kind of forgets about - namely, the ability to have holes in between entities. You see, when an entity got disabled in 2.2 (which just meant turning its `active` off), the indices of all other entities stayed the same; the indice of the entity that got disabled stays there as a hole in the array. But when an entity gets removed in 2.3 (previous to this patch), the indices of every entity afterwards in the array get shifted down by one. std::vector isn't really meant to be able to contain holes. Do the indices of entities and blocks matter? Yes; they determine the order in which entities and blocks get evaluated (the highest indice gets evaluated first), and I had to fix some block evaluation order stuff in previous PRs. And in the case of entities, they matter hugely when using the recently-discovered Arbitrary Entity Manipulation glitch (where crewmate script commands are used on arbitrary entities by setting the `i` attribute of `scriptclass` and passing invalid crewmate identifiers to the commands). If you use Arbitrary Entity Manipulation after destroying some entities, there is a chance that your script won't work between 2.2 and 2.3. The indices also still determine the rendering order of entities (highest indice gets drawn first, which means lowest indice gets drawn in front of other entities). As an example: let's say we have the player at 0, a gravity line at 1, and a checkpoint at 2; then we destroy the gravity line and create a crewmate (let's do Violet). If we're able to have holes, then after removing the gravity line, none of the other indices shift. Then Violet will be created at indice 1, and will be drawn in front of the checkpoint. But if we can't have holes, then removing the gravity line results in the indice of the checkpoint shifting down to indice 1. Then Violet is created at indice 2, and gets drawn behind the checkpoint! This is a clear illustration of changing the behavior that existed in 2.2. However, I also don't want to go back to the `active` system of having to check an attribute before operating on an entity. So... what do we do to restore the holes? Well, we don't need to have an `active` attribute, or modify any existing code that operates on entities. Instead, we can just set the attributes of the entities so that they naturally get ignored by everything that comes into contact with it. For entities, we set their invis to true, and their size, type, and rule to -1 (the game never uses a size, type, or rule of -1 anywhere); for blocks, we set their type to -1, and their width and height to 0. obj.entities.size() will no longer necessarily equal the amount of entities in the room; rather, it will be the amount of entity SLOTS that have been allocated. But nothing that uses obj.entities.size() needs to actually know the amount of entities; it's mostly used for iterating over every entity in the vector. Excess entity slots get cleaned up upon every call of mapclass::gotoroom(), which will now deallocate entity slots starting from the end until it hits a player, at which point it will switch to disabling entity slots instead of removing them entirely. The entclass::clear() and blockclass::clear() functions have been restored because we need to call their initialization functions when reusing a block/entity slot; it's possible to create an entity with an invalid type number (it creates a glitchy Viridian), and without calling the initialization function again, it would simply not create anything. After this patch is applied, entity and block indices will be restored to how they behaved in 2.2.
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{
clear();
Fix entity and block indices after destroying them This patch restores some 2.2 behavior, fixing a regression caused by the refactor of properly using std::vectors. In 2.2, the game allocated 200 items in obj.entities, but used a system where each entity had an `active` attribute to signify if the entity actually existed or not. When dealing with entities, you would have to check this `active` flag, or else you'd be dealing with an entity that didn't actually exist. (By the way, what I'm saying applies to blocks and obj.blocks as well, except for some small differing details like the game allocating 500 block slots versus obj.entities's 200.) As a consequence, the game had to use a separate tracking variable, obj.nentity, because obj.entities.size() would just report 200, instead of the actual amount of entities. Needless to say, having to check for `active` and use `obj.nentity` is a bit error-prone, and it's messier than simply using the std::vector the way it was intended. Also, this resulted in a hard limit of 200 entities, which custom level makers ran into surprisingly quite often. 2.3 comes along, and removes the whole system. Now, std::vectors are properly being used, and obj.entities.size() reports the actual number of entities in the vector; you no longer have to check for `active` when dealing with entities of any sort. But there was one previous behavior of 2.2 that this system kind of forgets about - namely, the ability to have holes in between entities. You see, when an entity got disabled in 2.2 (which just meant turning its `active` off), the indices of all other entities stayed the same; the indice of the entity that got disabled stays there as a hole in the array. But when an entity gets removed in 2.3 (previous to this patch), the indices of every entity afterwards in the array get shifted down by one. std::vector isn't really meant to be able to contain holes. Do the indices of entities and blocks matter? Yes; they determine the order in which entities and blocks get evaluated (the highest indice gets evaluated first), and I had to fix some block evaluation order stuff in previous PRs. And in the case of entities, they matter hugely when using the recently-discovered Arbitrary Entity Manipulation glitch (where crewmate script commands are used on arbitrary entities by setting the `i` attribute of `scriptclass` and passing invalid crewmate identifiers to the commands). If you use Arbitrary Entity Manipulation after destroying some entities, there is a chance that your script won't work between 2.2 and 2.3. The indices also still determine the rendering order of entities (highest indice gets drawn first, which means lowest indice gets drawn in front of other entities). As an example: let's say we have the player at 0, a gravity line at 1, and a checkpoint at 2; then we destroy the gravity line and create a crewmate (let's do Violet). If we're able to have holes, then after removing the gravity line, none of the other indices shift. Then Violet will be created at indice 1, and will be drawn in front of the checkpoint. But if we can't have holes, then removing the gravity line results in the indice of the checkpoint shifting down to indice 1. Then Violet is created at indice 2, and gets drawn behind the checkpoint! This is a clear illustration of changing the behavior that existed in 2.2. However, I also don't want to go back to the `active` system of having to check an attribute before operating on an entity. So... what do we do to restore the holes? Well, we don't need to have an `active` attribute, or modify any existing code that operates on entities. Instead, we can just set the attributes of the entities so that they naturally get ignored by everything that comes into contact with it. For entities, we set their invis to true, and their size, type, and rule to -1 (the game never uses a size, type, or rule of -1 anywhere); for blocks, we set their type to -1, and their width and height to 0. obj.entities.size() will no longer necessarily equal the amount of entities in the room; rather, it will be the amount of entity SLOTS that have been allocated. But nothing that uses obj.entities.size() needs to actually know the amount of entities; it's mostly used for iterating over every entity in the vector. Excess entity slots get cleaned up upon every call of mapclass::gotoroom(), which will now deallocate entity slots starting from the end until it hits a player, at which point it will switch to disabling entity slots instead of removing them entirely. The entclass::clear() and blockclass::clear() functions have been restored because we need to call their initialization functions when reusing a block/entity slot; it's possible to create an entity with an invalid type number (it creates a glitchy Viridian), and without calling the initialization function again, it would simply not create anything. After this patch is applied, entity and block indices will be restored to how they behaved in 2.2.
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}
void entclass::clear(void)
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{
invis = false;
type = 0;
size = 0;
tile = 0;
rule = 0;
state = 0;
statedelay = 0;
life = 0;
colour = 0;
para = 0;
behave = 0;
animate = 0;
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xp = 0;
yp = 0;
ax = 0;
ay = 0;
vx = 0;
vy = 0;
w = 16;
h = 16;
cx = 0;
cy = 0;
newxp = 0;
newyp = 0;
oldxp = 0;
oldyp = 0;
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x1 = 0;
y1 = 0;
x2 = 320;
y2 = 240;
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gravity = false;
onground = 0;
onroof = 0;
collisionframedelay = 0;
collisiondrawframe = 0;
collisionwalkingframe = 0;
visualonground = 0;
visualonroof = 0;
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onentity = 0;
harmful = false;
onwall = 0;
onxwall = 0;
onywall = 0;
isplatform = false;
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framedelay = 0;
drawframe = 0;
walkingframe = 0;
dir = 0;
actionframe = 0;
Fix, for in-GAMEMODE sprites, their colors updating too fast Okay, so the problem here is that Graphics::setcol() is called right before a sprite is drawn in a render function, but render functions are done in deltatime, meaning that the color of a sprite keeps being recalculated every time. This only affects sprites that use fRandom() (the other thing that can dynamically determine a color is help.glow, but that's only updated in the fixed-timestep loop), but is especially noticeable for sprites that flash wildly, like the teleporter, trinket, and elephant. To fix this, we need to make the color be recalculated only in the fixed-timestep loop. However, this means that we MUST store the color of the sprite SOMEWHERE for the delta-timesteps to render it, otherwise the color calculation will just be lost or something. So each entity now has a new attribute, `realcol`, which is the actual raw color used to render the sprite in render functions. This is not to be confused with their `colour` attribute, which is more akin to a color "ID" of sorts, but which isn't an actual color. At the end of gamelogic(), as well as when an entity is first created, the `colour` is given to Graphics::setcol() and then `realcol` gets set to the actual color. Then when it comes time to render the entity, `realcol` gets used instead. Gravitron squares are a somewhat tricky case where there's technically TWO colors for it - one is the actual sprite itself and the other is the indicator. However, usually the indicator and the square aren't both onscreen at the same time, so we can simply switch the realcol between the two as needed. However, we can't use this system for the sprite colors used on the title and map screen, so we'll have to do something else for those.
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SDL_zero(realcol);
lerpoldxp = 0;
lerpoldyp = 0;
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}
bool entclass::outside(void)
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{
// Returns true if any point of the entity is outside the map.
// Adjusts velocity for a clean collision.
if (xp < x1)
{
xp = x1;
return true;
}
if (yp < y1)
{
yp = y1;
return true;
}
if (xp + w > x2)
{
xp = x2 - w;
return true;
}
if (yp + h > y2)
{
yp = y2 - h;
return true;
}
return false;
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}
void entclass::setenemy( int t )
{
switch(t)
{
case 0:
//lies emitter
switch ((int) para)
{
case 0:
tile = 60;
animate = 2;
colour = 6;
behave = 10;
w = 32;
h = 32;
x1 = -200;
break;
case 1:
yp += 10;
lerpoldyp += 10;
tile = 63;
animate = 100; //LIES
colour = 6;
behave = 11;
para = 9; //destroyed when outside
x1 = -200;
x2 = 400;
w = 26;
h = 10;
cx = 1;
cy = 1;
break;
case 2:
tile = 62;
animate = 100;
colour = 6;
behave = -1;
w = 32;
h = 32;
break;
}
break;
case 1:
//FACTORY emitter
switch ((int) para)
{
case 0:
tile = 72;
animate = 3;
size = 9;
colour = 6;
behave = 12;
w = 64;
h = 40;
cx = 0;
cy = 24;
break;
case 1:
xp += 4;
lerpoldxp += 4;
yp -= 4;
lerpoldyp -= 4;
tile = 76;
animate = 100; // Clouds
colour = 6;
behave = 13;
para = -6; //destroyed when outside
x2 = 400;
w = 32;
h = 12;
cx = 0;
cy = 6;
break;
case 2:
tile = 77;
animate = 100;
colour = 6;
behave = -1;
w = 32;
h = 16;
break;
}
break;
default:
break;
}
}
void entclass::setenemyroom( int rx, int ry )
{
//Simple function to initilise simple enemies
rx -= 100;
ry -= 100;
switch(rn(rx, ry))
{
//Space Station 1
case rn(12, 3): //Security Drone
tile = 36;
colour = 8;
animate = 1;
break;
case rn(13, 3): //Wavelengths
tile = 32;
colour = 7;
animate = 1;
w = 32;
break;
case rn(15, 3): //Traffic
tile = 28;
colour = 6;
animate = 1;
w = 22;
h = 32;
break;
case rn(12, 5): //The Yes Men
tile = 40;
colour = 9;
animate = 1;
w = 20;
h = 20;
break;
case rn(13, 6): //Hunchbacked Guards
tile = 44;
colour = 8;
animate = 1;
w = 16;
h = 20;
break;
case rn(13, 4): //Communication Station
harmful = false;
if (xp == 256)
{
//transmittor
tile = 104;
colour = 4;
animate = 7;
w = 16;
h = 16;
xp -= 24;
lerpoldxp -= 24;
yp -= 16;
lerpoldyp -= 16;
}
else
{
//radar dish
tile =124;
colour = 4;
animate = 6;
w = 32;
h = 32;
cx = 4;
size = 9;
xp -= 4;
lerpoldxp -= 4;
yp -= 32;
lerpoldyp -= 32;
}
break;
//The Lab
case rn(4, 0):
tile = 78;
colour = 7;
animate = 1;
w = 16;
h = 16;
break;
case rn(2, 0):
tile = 88;
colour = 11;
animate = 1;
w = 16;
h = 16;
break;
//Space Station 2
case rn(14, 11):
colour = 17;
break; //Lies
case rn(16, 11):
colour = 8;
break; //Lies
case rn(13, 10):
colour = 11;
break; //Factory
case rn(13, 9):
colour = 9;
break; //Factory
case rn(13, 8):
colour = 8;
break; //Factory
case rn(11, 13): //Truth
tile = 64;
colour = 7;
animate = 100;
w = 44;
h = 10;
size = 10;
break;
case rn(17, 7): //Brass sent us under the top
tile =82;
colour = 8;
animate = 5;
w = 28;
h = 32;
cx = 4;
break;
case rn(10, 7): // (deception)
tile = 92;
colour = 6;
animate = 1;
w = 16;
h = 16;
break;
case rn(14, 13): // (chose poorly)
tile = 56;
colour = 6;
animate = 1;
w = 15;
h = 24;
break;
case rn(13, 12): // (backsliders)
tile = 164;
colour = 7;
animate = 1;
w = 16;
h = 16;
break;
case rn(14, 8): // (wheel of fortune room)
tile = 116;
colour = 12;
animate = 1;
w = 32;
h = 32;
break;
case rn(16, 9): // (seeing dollar signs)
tile = 68;
colour = 7;
animate = 1;
w = 16;
h = 16;
break;
case rn(16, 7): // (tomb of mad carew)
tile = 106;
colour = 7;
animate = 2;
w = 24;
h = 25;
break;
//Warp Zone
case rn(15, 2): // (numbers)
tile = 100;
colour = 6;
animate = 1;
w = 32;
h = 14;
yp += 1;
lerpoldyp += 1;
break;
case rn(16, 2): // (Manequins)
tile = 52;
colour = 7;
animate = 5;
w = 16;
h = 25;
yp -= 4;
lerpoldyp -= 4;
break;
case rn(18, 0): // (Obey)
tile = 51;
colour = 11;
animate = 100;
w = 30;
h = 14;
break;
case rn(19, 1): // Ascending and Descending
tile = 48;
colour = 9;
animate = 5;
w = 16;
h = 16;
break;
case rn(19, 2): // Shockwave Rider
tile = 176;
colour = 6;
animate = 1;
w = 16;
h = 16;
break;
case rn(18, 3): // Mind the gap
tile = 168;
colour = 7;
animate = 1;
w = 16;
h = 16;
break;
case rn(17, 3): // Edge Games
if (yp ==96)
{
tile = 160;
colour = 8;
animate = 1;
w = 16;
h = 16;
}
else
{
tile = 156;
colour = 8;
animate = 1;
w = 16;
h = 16;
}
break;
case rn(16, 0): // I love you
tile = 112;
colour = 8;
animate = 5;
w = 16;
h = 16;
break;
case rn(14, 2): // That's why I have to kill you
tile = 114;
colour = 6;
animate = 5;
w = 16;
h = 16;
break;
case rn(18, 2): // Thinking with Portals
//depends on direction
if (xp ==88)
{
tile = 54+12;
colour = 12;
animate = 100;
w = 60;
h = 16;
size = 10;
}
else
{
tile = 54;
colour = 12;
animate = 100;
w = 60;
h = 16;
size = 10;
}
break;
//Final level
case rn(50-100, 53-100): //The Yes Men
tile = 40;
colour = 9;
animate = 1;
w = 20;
h = 20;
break;
case rn(48-100, 51-100): //Wavelengths
tile = 32;
colour = 7;
animate = 1;
w = 32;
break;
case rn(43-100,52-100): // Ascending and Descending
tile = 48;
colour = 9;
animate = 5;
w = 16;
h = 16;
break;
case rn(46-100,51-100): //kids his age
tile = 88;
colour = 11;
animate = 1;
w = 16;
h = 16;
break;
case rn(43-100,51-100): // Mind the gap
tile = 168;
colour = 7;
animate = 1;
w = 16;
h = 16;
break;
case rn(44-100,51-100): // vertigo?
tile = 172;
colour = 7;
animate = 100;
w = 32;
h = 32;
break;
case rn(44-100,52-100): // (backsliders)
tile = 164;
colour = 7;
animate = 1;
w = 16;
h = 16;
break;
case rn(43-100, 56-100): //Intermission 1
tile = 88;
colour = 21;
animate = 1;
w = 16;
h = 16;
break;
case rn(45-100, 56-100): //Intermission 1
tile = 88;
colour = 21;
animate = 1;
w = 16;
h = 16;
break;
//The elephant
case rn(11, 9):
case rn(12, 9):
case rn(11, 8):
case rn(12, 8):
tile = 0;
colour = 102;
animate = 0;
w = 464;
h = 320;
size = 11;
harmful = false;
break;
}
}
void entclass::settreadmillcolour( int rx, int ry )
{
rx -= 100;
ry -= 100;
rx += 50 - 12;
ry += 50 - 14; //Space Station
tile = 20; //default as blue
switch(rn(rx, ry))
{
case rn(52, 48):
tile = 791;
break; //Cyan
case rn(49, 47):
tile = 24;
break; //Yellow
case rn(56, 44):
tile = 24;
break; //Yellow
case rn(54, 49):
tile = 24;
break; //Yellow
case rn(49, 49):
tile = 36;
break; //Green
case rn(55, 44):
tile = 36;
break; //Green
case rn(54, 43):
tile = 36;
break; //Green
case rn(53, 49):
tile = 36;
break; //Green
case rn(54, 45):
tile = 711;
break; //Green (special)
case rn(51, 48):
tile = 711;
break; //Green (special)
case rn(50, 49):
tile = 28;
break; //Purple
case rn(54, 44):
tile = 28;
break; //Purple
case rn(49, 42):
tile = 28;
break; //Purple
case rn(55, 43):
tile = 28;
break; //Purple
case rn(54, 47):
tile = 28;
break; //Purple
case rn(53, 48):
tile = 28;
break; //Purple
case rn(51, 47):
tile = 32;
break; //Red
case rn(52, 49):
tile = 32;
break; //Red
case rn(48, 43):
tile = 32;
break; //Red
case rn(55, 47):
tile = 32;
break; //Red
case rn(54, 48):
tile = 32;
break; //Red
default:
return;
break;
}
}
Fix, for in-GAMEMODE sprites, their colors updating too fast Okay, so the problem here is that Graphics::setcol() is called right before a sprite is drawn in a render function, but render functions are done in deltatime, meaning that the color of a sprite keeps being recalculated every time. This only affects sprites that use fRandom() (the other thing that can dynamically determine a color is help.glow, but that's only updated in the fixed-timestep loop), but is especially noticeable for sprites that flash wildly, like the teleporter, trinket, and elephant. To fix this, we need to make the color be recalculated only in the fixed-timestep loop. However, this means that we MUST store the color of the sprite SOMEWHERE for the delta-timesteps to render it, otherwise the color calculation will just be lost or something. So each entity now has a new attribute, `realcol`, which is the actual raw color used to render the sprite in render functions. This is not to be confused with their `colour` attribute, which is more akin to a color "ID" of sorts, but which isn't an actual color. At the end of gamelogic(), as well as when an entity is first created, the `colour` is given to Graphics::setcol() and then `realcol` gets set to the actual color. Then when it comes time to render the entity, `realcol` gets used instead. Gravitron squares are a somewhat tricky case where there's technically TWO colors for it - one is the actual sprite itself and the other is the indicator. However, usually the indicator and the square aren't both onscreen at the same time, so we can simply switch the realcol between the two as needed. However, we can't use this system for the sprite colors used on the title and map screen, so we'll have to do something else for those.
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void entclass::updatecolour(void)
Fix, for in-GAMEMODE sprites, their colors updating too fast Okay, so the problem here is that Graphics::setcol() is called right before a sprite is drawn in a render function, but render functions are done in deltatime, meaning that the color of a sprite keeps being recalculated every time. This only affects sprites that use fRandom() (the other thing that can dynamically determine a color is help.glow, but that's only updated in the fixed-timestep loop), but is especially noticeable for sprites that flash wildly, like the teleporter, trinket, and elephant. To fix this, we need to make the color be recalculated only in the fixed-timestep loop. However, this means that we MUST store the color of the sprite SOMEWHERE for the delta-timesteps to render it, otherwise the color calculation will just be lost or something. So each entity now has a new attribute, `realcol`, which is the actual raw color used to render the sprite in render functions. This is not to be confused with their `colour` attribute, which is more akin to a color "ID" of sorts, but which isn't an actual color. At the end of gamelogic(), as well as when an entity is first created, the `colour` is given to Graphics::setcol() and then `realcol` gets set to the actual color. Then when it comes time to render the entity, `realcol` gets used instead. Gravitron squares are a somewhat tricky case where there's technically TWO colors for it - one is the actual sprite itself and the other is the indicator. However, usually the indicator and the square aren't both onscreen at the same time, so we can simply switch the realcol between the two as needed. However, we can't use this system for the sprite colors used on the title and map screen, so we'll have to do something else for those.
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{
switch (size)
{
case 0: // Sprites
case 7: // Teleporter
case 9: // Really Big Sprite! (2x2)
case 10: // 2x1 Sprite
case 13: // Special for epilogue: huge hero!
realcol = graphics.getcol(colour);
break;
case 3: // Big chunky pixels!
realcol = graphics.bigchunkygetcol(colour);
break;
case 4: // Small pickups
realcol = graphics.huetilegetcol();
break;
case 11: // The fucking elephant
if (game.noflashingmode)
{
realcol = graphics.getcol(22);
}
else
{
realcol = graphics.getcol(colour);
}
break;
case 12: // Regular sprites that don't wrap
// if we're outside the screen, we need to draw indicators
if ((xp < -20 && vx > 0) || (xp > 340 && vx < 0))
{
realcol = graphics.getcol(23);
}
else
{
realcol = graphics.getcol(colour);
}
}
Fix, for in-GAMEMODE sprites, their colors updating too fast Okay, so the problem here is that Graphics::setcol() is called right before a sprite is drawn in a render function, but render functions are done in deltatime, meaning that the color of a sprite keeps being recalculated every time. This only affects sprites that use fRandom() (the other thing that can dynamically determine a color is help.glow, but that's only updated in the fixed-timestep loop), but is especially noticeable for sprites that flash wildly, like the teleporter, trinket, and elephant. To fix this, we need to make the color be recalculated only in the fixed-timestep loop. However, this means that we MUST store the color of the sprite SOMEWHERE for the delta-timesteps to render it, otherwise the color calculation will just be lost or something. So each entity now has a new attribute, `realcol`, which is the actual raw color used to render the sprite in render functions. This is not to be confused with their `colour` attribute, which is more akin to a color "ID" of sorts, but which isn't an actual color. At the end of gamelogic(), as well as when an entity is first created, the `colour` is given to Graphics::setcol() and then `realcol` gets set to the actual color. Then when it comes time to render the entity, `realcol` gets used instead. Gravitron squares are a somewhat tricky case where there's technically TWO colors for it - one is the actual sprite itself and the other is the indicator. However, usually the indicator and the square aren't both onscreen at the same time, so we can simply switch the realcol between the two as needed. However, we can't use this system for the sprite colors used on the title and map screen, so we'll have to do something else for those.
2020-05-01 02:34:37 +02:00
}
bool entclass::ishumanoid(void)
{
return type == 0
|| type == 12
|| type == 14
|| type == 55;
}