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#include <raylib.h>
#include <string.h>
#include "stdio.h"
#include "constants.h"
#include "game.h"
#include "assets.h"
#include "player.h"
#include "background.h"
#include <math.h>
#include "utils.h"
Game game;
void AddEntity(Entity* e) {
static int nextId = 0;
for(int i = 0; i < MAX_ENTITY_COUNT; i++) {
if (!EntityAllocated(&game.entities[i])) {
e->id = nextId++;
e->flags |= ENTITY_ALLOCATED;
game.entities[i] = *e;
return;
}
}
#ifdef BEATEMUP_DEBUG
TraceLog(LOG_WARNING, "Entity pool full, cannot add new entity!");
#endif
}
void InitGame() {
memset(&game, 0, sizeof(Game));
game.camera = (Camera2D) {
.offset = (Vector2) {WINDOW_WIDTH / 2.0f, 0.0f},
.rotation = 0.0f,
.zoom = 1.0f
};
}
void UpdateEntity(Entity* e, float deltaTime) {
switch (e->type) {
case Player_Entity:
UpdatePlayer(e, deltaTime);
break;
default:
break;
}
}
void UpdateGame(float deltaTime) {
#ifdef BEATEMUP_DEBUG
if (IsKeyPressed(KEY_F3)) {
game.enableDebugOverlay = !game.enableDebugOverlay;
}
#endif
for (int i = 0; i < MAX_ENTITY_COUNT; i++) {
Entity* e = &game.entities[i];
if (EntityAllocated(e))
UpdateEntity(e, deltaTime);
}
}
void DrawEntitySprite(const Entity* e, int spriteIndex) {
const Sprite* drawnSprite = &e->sprites[spriteIndex];
Rectangle srcRect;
if (!IsAnimated(drawnSprite)) {
srcRect = (Rectangle) {
.x = 0,
.y = 0,
.width = drawnSprite->texture.width,
.height = drawnSprite->texture.height
};
} else {
const Animation* currentAnimation =
&drawnSprite->animations[drawnSprite->currentAnimation];
srcRect = GetCurrentSourceRectangle(currentAnimation);
}
Vector2 origin = {0.0f, 0.0f};
float rotation = 0.0f;
Rectangle destRect = GetSpriteDrawDestinationRectGlobal(e, spriteIndex);
if (drawnSprite->flipX)
srcRect.width = -srcRect.width;
if (drawnSprite->flipY)
srcRect.height = -srcRect.width;
DrawTexturePro(drawnSprite->texture, srcRect, destRect, origin, rotation, WHITE);
}
void DefaultDrawEntity(const Entity* e, DrawLayer toLayer) {
for (int i = 0; i < e->numSprites; i++) {
if (e->sprites[i].layer == toLayer)
DrawEntitySprite(e, i);
}
}
void DrawEntity(const Entity* e, DrawLayer toLayer) {
switch (e->type) {
default:
DefaultDrawEntity(e, toLayer);
}
}
void DrawEntitiesInLayer(int layer) {
for (int i = 0; i < MAX_ENTITY_COUNT; i++) {
Entity* currentEntity = &game.entities[i];
if (ShouldDrawEntity(currentEntity, layer))
DrawEntity(currentEntity, layer);
}
}
void DrawGame() {
BeginDrawing();
ClearBackground(RAYWHITE);
BeginMode2D(game.camera);
for (DrawLayer layer = Background_Layer; layer <= Foreground_Layer; layer++)
DrawEntitiesInLayer(layer);
#ifdef BEATEMUP_DEBUG
if (game.enableDebugOverlay) {
for (int i = 0; i < MAX_ENTITY_COUNT; i++) {
DebugHighlights(&game.entities[i]);
}
}
#endif
EndMode2D();
#ifdef BEATEMUP_DEBUG
if (game.enableDebugOverlay) {
const int posX = 10, posY = 10;
DrawFPS(posX, posY);
}
#endif
EndDrawing();
}
void AddWall(float xpos, float ypos, float width, float height) {
Entity wall = {0};
wall.type = Wall_Entity;
wall.flags |= ENTITY_PHYSICS_ACTIVE;
wall.position = (Vector2) {xpos, ypos};
wall.physicsCollider = (Rectangle) {0, 0, width, height};
#ifdef BEATEMUP_DEBUG
wall.physicsColliderColor = BLUE;
#endif
AddEntity(&wall);
}
static inline float GetCurrentFrameTime(const Animation* animation) {
return animation->frameTimes[animation->currentFrame];
}
void UpdateCurrentSpriteAnimation(Sprite* sprite, float dt) {
if (!IsAnimated(sprite))
return;
Animation* currentAnimation = GetCurrentAnimation(sprite);
if (currentAnimation->isComplete)
return;
currentAnimation->currentFrameTimer += dt;
if (currentAnimation->currentFrameTimer >= GetCurrentFrameTime(currentAnimation)) {
currentAnimation->currentFrame++;
currentAnimation->currentFrameTimer =
currentAnimation->currentFrameTimer - GetCurrentFrameTime(currentAnimation);
}
if (currentAnimation->currentFrame >= currentAnimation->numFrames) {
if (currentAnimation->isLooping) {
currentAnimation->currentFrame = 0;
currentAnimation->currentFrameTimer = 0.0f;
}
else {
currentAnimation->currentFrame = currentAnimation->numFrames - 1;
currentAnimation->isComplete = true;
}
}
}
Rectangle GetSrcRectFromIndex(Texture texture, int framesX, int framesY, int index) {
const float frameWidth = (float)texture.width / framesX;
const float frameHeight = (float)texture.height / framesY;
return (Rectangle) {
.x = (index % framesY) * frameWidth,
.y = (index / framesY) * frameHeight,
.width = frameWidth,
.height = frameHeight
};
}
Animation AnimationFromIndices(AnimationFromIndicesParams params) {
int numFrames = params.numFrames;
bool isLooping = params.isLooping;
Texture texture = params.texture;
int framesX = params.framesX;
int framesY = params.framesY;
int* indices = params.indices;
float* frameTimes = params.frameTimes;
Animation animation = (Animation) {
.numFrames = numFrames,
.isLooping = isLooping,
.currentFrame = 0
};
for (int i = 0; i < numFrames; i++) {
animation.srcRects[i] = GetSrcRectFromIndex(texture, framesX, framesY, indices[i]);
animation.frameTimes[i] = frameTimes[i];
}
return animation;
}
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